Answer:
The testes
Explanation:
the testes are two oval shaped male reproductive glands that produce sperm and hormone testoterone
1. Trachea itself is not considered a complete organ. It is a part of the breathing system and the only airway to the lungs.
2.Yes rigid organs.
3. Rigid organs constitute part of the endoskeleton of vertebrates.
The water on land, lakes, streams, even puddles are evaporated by the sun.....and you know the rest
Leather shoes are made of natural polymers; raincoats are made of synthetic polymers.